Try this link first. http://support.mozilla.com/en-US/kb/...port+Home+Page
and investigate the links therefrom. You may need to contact Mozilla to get specific historical information, ie. of the type provided when an update occurs and one is informed about the changes made since Version xx.xx.xx etc.

So there isn't a file somewhere with the history details in it that I could access and open at all?

At last, Ska, I think I've found what you want, after misunderstanding your original question

Spotlight -> type Firefox -> the first folder listed, which will show Firefox in Users/name/Library/Application Support. Click that folder in S'light.

When it opens you'll see another folder called Profiles. 2x-click that folder after which you'll get another folder (with a strange name) in which you'll find a file called history.dat What you do with that file is entirely up to you. I see it gets modified regularly, so you may be able to delete it after which it'll get rebuilt next time you restart FFox.